"The simple reason for this is the role it plays in rendering the difference between mirror-less and mirror-full cameras moot."

Butler discusses his personal experience using the battery along with the α7R III.

"I recently spent a morning shooting both stills and video of a cyclocross race with the α7R III. Shooting a mixture of JPEGs, uncompressed Raws and 4K video, I comfortably churned out more than the 64GB capacity of my memory card and had to switch to a second. What I didn’t come close to doing was running the battery out. At the end of the racing, I still had more than 27% charge left, despite the sub-10°C temperatures."

The elimination of this battery anxiety he's felt with previous cameras is a huge deal to Butler, "Because when I’m shooting, I don’t ever want to be worrying about whether I’ve brought enough batteries, and which ones are charged. I don’t even want to have to think about it."

"So, as a technology that allows mirrorless cameras (hopefully of all brands) to offer the same practical benefits as their DSLR rivals, my gear of the year is a battery. Because it makes the α9 and α7R III into significantly better cameras, not just because it pulls another leg out from under all those tired ‘mirrorless vs DSLR’ arguments."

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